# 500G, 特殊 一行
def myreadlines(f, newline):
    buf = ""
    while True:
        while newline in buf:
            pos = buf.index(newline)
            yield buf[:pos]
            buf = buf[pos+len(newline):]
        chunk = f.read(4096)

        if not chunk:
            # 说明已经读到了文件结尾

            yield buf
            break
        buf += chunk


with open('chapter09/input.txt') as f:
    for line in myreadlines(f, '{|}'):
        print(line)
